Perforated pattern mechanism for looms



June l0, 1952 J. L. REYNoLDs, sR 2,600,128

PERFORATED PATTERN MECHANISM FOR LOOMS June l0, 1952 l J. REYNOLDS, SR

PERFORATED PATTERN MECHANISM FOR Looms 9 Sheets-Sheet 3 Filed Aug. 5,1948 June 10, 1952 .1. REYNOLDS, sR

PERFORATED PATTERN MECHANISM FOR LOOMS Filed Aug. 5, 1948 9 Sheets-Sheet4 ATTUE'NEY June 10, 1952 J. l.. REYNOLDS, sR

PERFORATED PATTERN MECHANISM FOR LOOMS 9 Sheets-Sheet 5 Filed Aug. 5,1948 me/WLMI r/AME; L. Psv/voos, Se.

June 10, 1952 J. l.. REYNOLDS, sR

PERFORATED PATTERN MECHANISM FOR Loon/1s 9 Sheets-Sheet 6 Filed Aug. 5,1948 JAMES L. Re

June l0, 1952 J. l.. REYNOLDS, sR

PERFORATED PATTERN MECHANISM FOR LOOMS 9 Sheet s-Sheet 7 Filed Aug. 5,1948 June l0, 1952 J. REYNOLDS, SR

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June l0, 1952 J. l.. REYNOLDS, sR

PERFORATED PATTERN MECHANISM FOR LOOMS 9 Sheets-Sheet 9 Filed' Aug. 5,1948 Patented June 10,A 1952 Charlotte, N. C.

Schwartz Machinery `Golnoratio'ny .1 This invention relates -to la dobby'leem and more especially r`to'an-improved-pattern mounting*andiimproved means associated Atherewith `for'`cran)lling themechanism'- of'r a 'conventional (lobby-head.

It is "Well "known toy thnsel familiar `with the art thatcer'tainl'o'oinsfare equipped with'a conventin'al'dbby head' havinga plurality7`f j acksand index'ngers or hooks, Awhich arecontrol-led by various4'mi-zians; one of said means` beingA endless :paper patterns punhd'to-eontrol one mechanism'Whi'ch-in'- turn cntrolslv a second 'mechanism toselectively operate the hooks 'andthe jacksfor controlling the harness"mechanism of 4'tl'ie loom.

In the c'asewhere ithfaslbeen necessary-'te repeatia particular patternmanytimes over, 'thereby requiring that'fth'epap'erpatternbe of'con-'siderable lengthyth'e len'gtlrofthefpattern member hasA beentosuchanextentthatf it 'lias been "necessary tot` provide boxes'or othersuitable vc'on- `tainers disposed below' Iand -adjacent the dobby h'asbeen 'stored as-it'yva's fed Ithrough/the l'patterncontrllingmecna'riisn'i of" theA dobby head.

-Itv is "therefore an object'ofthis inventi-on'to provide a-pair ofrolls v'to Which-opposite" ends-of a paper or fabric patternniemberaresecure'dand between which the' mechanism te befactuated byAthe'pattern member-is'disposed 'andthe pattern member is' rolled 'arund`the f first of theseY rolls 'andiasitlis used, it v'is Wound-aboutthessecond "oi tleserolls nntil a rprede'termined length of *the patternhas passed throughtheipatternactuating mechanism' for 'the' dobby head.`V`IThe pattern rolls are automatically` reversed in' such la mannerthat 'thepatternf'may 'be repeated rand this-'continues for as Along-'asthe loom is running and '-'tlrus decreases the required length of the-pattern member considerably.

It'isanother"objectof this invention to provide 'apat'tern-'she'ethaving 'a pluralitynf spaced rows of` transverse perforationstherein,said perforations -being made according tofafdesired pattern,

and to provide means for feeding the perforated pattern`sh`eet through a"mechanism nfor/operatingf certain selected jacks 'in the dobby'mechanisrrr 'for controlling thev Iharnessmechanisrn of the"loom-andwhereby the pattern" sheetis' fed through this pattern actuatingAmeans i'nstep 'by step relation so thateveryaother one of'the rows of\Aperforations is movedinto'` alignmenty with" the mechanismfor-operating'the'certain jacks of the dobby Yheadand whereby; WhenvVthepattern' sheet has beenwcompletely used-up from its feeding 'sourcethe mechanism "Willi then reverseautomatically; first moving'oneehalfstep andthen rel'suming its full step by step -movementinadirechand side`of Figure {l--A to'fthe left;

tionoppositeto `that in vvv-hichf it 'hadfbefen. p're`` lviouslymoving,- to'vscan the rows ffperforations missed in the `.first scanningdperation, Vthus re- `-quiring'thatthe pattern sheetneed not' be aslong-aSfit`Would erdinarily -haVeY'tQbe if a reversing yrn'ecfhfanism of thetype-described were not"us`d.

Seme ef -the fobjects ofthe nVentiOnfhaviiig been stated, other/objectsv Will appear as thetlescription-proceeds, when taken in. connectionwith -th'e accompanying drawings, in which A-Figure 1 is fa 'schematic efront elevation V'f a ioomhowingtm sobbynea'ti indunted'thien andtheinvention associated therezvith;

vin Figure-1;

taken along the line3- 3 Fi'guremz;'l

Figurej- 4vis anjenlarged elevation' looking'ifm the leftahandjs-ide ofFigure? tothe righ-tand is ltakenalongfthe -line l-llv in Figure 2;

Figurei-Af is Van Y'extension 'ofi thev lo'wrriglthandportienef- Figurel; 4 Y

fFigure Buis an elevationlooking fronthe 'rightf- -Figure 6isfanenlarged yertcal sectinal' View taken along `the lines-t5u o fFigure 2'; y y

Figi-1re 7 is Van Y'enlarged elevation 'of the lvver central portionjofFigure and's-hovvingtlie "parts in a'diierent relative position;1 Y vFigure- 8 `is an elevation.similar!to` Figure' 7 fbt showing the partsi'n'gano'ther pesitinandtv'ith seme parts ybeing Ylfiroken away Figure 9is an enlarged` isometric iiivvvvith fparts section and being takenalong" the'line '9-9fin Fg-urex2;

v Figure 1 0 is a sectionalfplan vitv'taln'sbstantially along thev line?lll- Il inlligure'` 8 f Figure 11- is an enlarged'plan-viewvithparts insection and `being takensubstaiitiallylalg the line H-.I I inFig'ure'l;

v Figure' '12'15 an 'enlargedvertieaiiseetinr'view ISV-"l5 anguria in, I

Figure 1,6 is an enlarged planv view with partsin section and beingtaken vsubst'antiall'ylalngfthe 1in@ 'i6- f6 inFigure'l; n K,

Figure 17 is anV enlarged bl'n l'w with Parts accedas 3 in section andbeing taken substantially along the line |1|1 in Figure 4;

Figure 18 is an enlarged plan View with parts in section and is takensubstantially along the line |8-l8 inFigure 4;

Figure 19 is an enlarged sectional plan view taken substantially alongthe line |9|9 in Figure 4;

Figure 2O is a view similar to Figure 19 and is taken along the line20-20 in Fig-ure 3.

Referring more speoically to the drawings, the numerals I and indicatethe right and left-hand side frame members of a loom which are connectedat their upper ends by a conventional arch connection |2 and areconnected at their lower ends by a girt |3. The loom has conventionalharnesses |4 mounted therein, the lower ends of which are connected toconventional means, not shown, associated with the loom, and the upperends of which have the lower ends of conventional harness straps |1connected to the same which extend upwardly and pass over conventionalsheaves rotatably mounted on shafts 22 secured in suitable brackets 24secured to the arch connection l2 of the loom, in a conventional manner.

A conventional dobby head, broadly designated at 30, is shown in thedrawings as being mounted on the right-hand vertical side frame memberI0 of the loom. However, it is obvious that this mechanism could bemounted on either side of the loom. This conventional dobby head 38 ismounted on the loom in a conventional manner and is shown in thedrawings as being secured to an angle plate 3|, as by screws 32, which,in turn, are secured to the frame member I0, as by screws 33.

The conventional dobby mechnism is also secured to the side frame memberl0, as by screws 34, and to one end of the arch connection I2, as by abolt 35. The dobby head 30 comprises front and rear frame members 40 and4|, respectively, which support a rod 42 on which are mountedconventional harness lifter jacks 43 to which the upper ends of theharness straps |1 are connected as shown in Figure 1.

Each harness lifter jack has a conventional jack lever 45 (Figure 6)pivotally connected to the same, as at 46, and these jack levers 45 arepivoted as at 41 and 50 to upper and lower dobby hooks 5| and 52,respectively.

Top and bottom cross girts 53 and 54, respectively, serve to limitleft-hand motion of the jack levers 45, in Figure 6, thus positioningthe harness jacks 43. Top and bottom combs 55 and 58 serve to guide andsupport their respective hooks 5| and 52 in laterally spaced relationtoeach other. When any of the hooks 5| and 52 are in their loweredposition, they are adapted to be engaged by upper and lower jack knives60 and 6|, and the front and rear frame members 40 and 4| each haveupper and lower horizontally disposed slots 16 and 11, respectively, inwhich the opposite ends of the upper and lower knives 60 and 6|,respectively, are mounted for reciprocatory movement. The mode oftransmitting this reciprocatory movement is to be presently described.

A conventional rocker shaft 62 is oscillatably mounted in the front andrear dobby frame members 40 and 4|, respectively, and extendingoutwardly beyond the same and has rocker arms 63 and 84 Xedly mounted atthe front and rear ends thereof, respectively. Y

The upper and lower ends of the rocker arms 63 and 64 have conventionalconnecting rods 65 pivotally connected to the same, the other ends ofwhich are pivotally connected to the ends of the jack knives 60 and 6|for imparting reciprocatory motion to the knives 60 and 6|. The rockerarm 63 in Figures 1 and 4 has an outwardly extending portion 66 integraltherewith which has pivotally connected thereto, as at 68, the upper endof a conventional dobby connecting rod 61. Referring to Figure 1, it maybe observed that the dobby connecting rod 61 is pivotally connected atits lower end, as at 10, to a conventional dobby crank 1| secured on oneend of a conventional pick shaft 12 rotatably mounted in the verticalside frame members |0 and of the loom and having conventional pick camwheels 13 mounted thereon.

The dobby head is associated with the harness mechanism of the loom'asshown in Figure 1 for controlling the weave of a pattern being woven bythe loom. The above described mechanism, which is a conventional part ofa dobby loom, has heretofore been operated by various means includingcontrol chains and paper or fabric pattern members, and it is the objectof this invention to provide a new and improved means for mounting thepaper or fabric pattern member as well as an improved means forpositioning the hooks 5| and 52 to thereby actuate the desired harnessjacks 43 depending upon the nature of the pattern.

Referring to Figures 2, 3, and 4, there may be observed front and rearvertically disposed plates and 8|, respectively, on which the major partof the improved apparatus is mounted. The plate 80 is secured to thefront dobby frame member 40 by a bar 83 having an adjustment slot 84therein which is penetrated by a screw 85 threadably imbedded in thefront vertical plate 80 and the plate 80 is cut to conform to the lowerright-hand portion of the front dobby member 40, in Figure 4. The bar 83extends upwardly and is secured, as by a screw 88, to the front verticalframe member 40 of the dobby head 30.

Referring to Figures 3, '1 and 8, it may be observed that the rearvertical plate 8| is cut to conform to the rear dobby frame member 4|and is secured to the same by a plate which is slidably penetratedbyscrews 9| and 92, the screw 9| being imbedded in the plate 8| and thescrew 92 being threadably imbedded in the dobby frame member 4|.

Disposed between the vertically disposed plates 80 and 8| adjacent theirouter edges (Figures 2 and 6) are spacer rods 34 and 95, the restrictedopposite ends of which penetrate the vertically disposed plates 80 and8|, and have nuts 96 threadably mounted on the opposite ends thereof tothus secure the plates 8|) and 8| to the opposite ends of the rods 94and 95 and to thus lend rigidity to the plates 80 and 8|.

The rearxnost rocker 64 has a vertical slot |00 therein in which a pivotmember |0| is mounted for vertical adjustment. This pivot member |0| hasthe right-hand end of a connecting rod |02 pivotally mounted thereon, inFigures 3, 'i' and 8, and has an enlarged portion |03 at the other endthereof having a cavity therein in which the right-hand end of aconnecting rod |05 is secured, as by a set screw |06, to thus permitlongitudinal adjustment of the combined length of the connecting rods|02 and |05. The left-hand end of the connecting rod |05, in Figures 3,'1 and 8, is pivotally connected as at |08 to the vertical 5 .leg l|01of an .L-shaped member broadly designated at H0.

The L-shaped .member .is oscillatably mounted on the vertically disposedplate 8| as at I adjacent its lower end, in Figure 3, and has ahorizontal leg ||2 integral therewith which has a horizontally disposedslot ||3 therein.

The slot ||3 is slidably penetrated by a pin ||4 projecting rearwardlyfrom an inverted L- shaped member H5. The L-shaped member ||5 is also avertically movable member and has spaced vertical slots ||1 thereinwhich are slidably penetrated by spaced pins ||6 projecting from thevertically disposed Aplate 8| and being secured therein as by a pressedfit. The .horizontal leg of the inverted L-shaped member ||5 haspivotally mounted thereon, Vas at |20, depending pawl arms |2| and |22.The pawl arm |2| is Vadapted to engage intermittently a ratchet Wheel|23 and the pawl arm |22 is adapted to intermittently engage a ratchetwheel |24.

These depending pawl arms |2| and |122 do not engage their respectiveratchet wheels |23 and 24 simultaneously, inasmuch as the pawl arm |2|is adapted to intermittently rotate the ratchet wheel |23 in acounterclockwise direction in Figures 3, '1 and 8 and the pawl arm |22is adapted to rotate the ratchet wheel |24 in a clockwise direction inFigures 3, '1 and 8. The pawl arms |2| and |22 have downwardly extendingfingers |25 and |26, respectively, the proximate surfacesI of which areadapted to be engaged by pins |29 and |30, respectively. The pins |29and |30 are mounted, as by a pressed t, in a horizontally disposed arm|3| having a slot |32 therein which is slidably penetrated by a pin |33mounted as by a pressed fit in the vertically disposed plate 8| on whichthe arm |3| has horizontal sliding movement. The free end of the arm |3|has horizontal sliding movement also on a grooved block |28, secured asby a bolt |34 to the vertically disposed rear plate 8| (Figures 3, 1, 8and 14) The right-hand end of the arm |3| in Figures 3, '1 and 8 has avertical slot |35 therein which is slidably penetrated by a pin |36projecting from a substantially vertically disposed lever arm |31secured, at its lower end, as by a set screw |40, on one end of atransverse shaft |4|. The shaft |4I is oscillatably mounted in bearingblocks |42 and |43 secured to the front and rear vertically disposedplates 60 and 8|, respectively. The bearing block |42 is secured, as bya bolt |45 (Figures 4 and 18), to the front vertically disposed plate 80and the bearing block |43 is secured as by screws |46 (Figures 3, 7 and8) to the rear vertical plate 8 I Referring to Figures 4 and 18, it maybe observed that the front end of the oscillatable shaft |4| has an arm|50 securely mounted thereon, as by a set screw |5|, and this arm |50has the upper end of a link member |52 pivotally connected thereto, asat |53 and the lower end of the connecting link |52 is pivotallyconnected as at |55 to the left-hand end of an arm |56 in Figures 4 and17.

The right-hand end of the arm |56 in Figures 4 and 17 has a boss |51integral therewith which is oscillatably mounted on a pin |60 secured,as by a pressed fit, in the lower end of a vertically disposed plate|6|, the upper end of which is secured, as by screws |62 (Figure 4) tothe vertically disposed plate 80. The boss |51 of the arm |56 hassecured thereon, as by screws |63. a strap iron member |64 having ears|65 and |66 integral therewith. It is obvious that the ears |655 and.|66 .of the :strap iron member 464 Vmay be cast .integralwith the boss|51., if rso'de'sred. The :ears "|65 `and 4|66 have slots :|61 and y|68therein,y respectively, 'which are :looselypenetrated bythe right-handVand ,left-hand reaches, respectively, of a cable 1| 10.

The upper end of the right-hand reach of 'the `cable |10 is wound :aboutthe -hub of a pinion |15 rotatably mounted on a stub shaft |16 secured^as .by welding Ito the vertical .plate (Figure 2). The pinion |15 isvprevented from having :endwise movement :on the shaft |1=6 by a collar|:'|1 securely mounted thereon, as by -a The cable 10 is wound about thehub of the pinion and its free end is welded, as at |84- (Figure 2) tothe vertical face rof the pinion |15.

'The `right-hand reach of the cable '|10 then extends downwardly fromthepinion |15, through the slot |161'in the ear |65 of the member |64,as heretofore described, and has a collar |82 secured thereon, as by aset screw |83'. The cable |10 then extends downwardly and passes beneatha suitablefpulley |85 which is rotatably mounted on a bolt |86 mountedin the upper end of a U-shaped member |81 (Figures 4-A and 5). TheU-shaped member |81 is slidably penetrated by a .hook Vmember |90, onwhich a suitable weight |9| .is mounted. The cable |10 then extendsupwardly and has a collar |92 mounted thereon, which vis identical tothe collar |82 mounted on the right-hand reach thereof and this collar|92 is secured von the left-hand reach of the cable |10, as by a setscrew |93 (Figure 4A).

The cable |10 in Figures 4 and 17 then extends upwardly through the slot|68 in the ear |66 of the member |64, as heretofore described, and itsupper end is wound about the hub of a pinion |95 which is identical tothe pinion |15 and to which the other free end of the cable |10 issecured in an identical manner. The pinion |95 is rotatably mounted on astub shaft |96, which isidentical Yto the stub shaft |16, and is alsowelded to the vertically disposed plate 80. This pinion |95 is alsopreventedffromendwise movement on the shaft |96 by a collar |91 securedthereon, as by a setscrew 200.

The'ratchet wheels |23 and |24 (Figures 3, '1, 8 and 14) are heldintegral with each other by suitable dowel pins 2| 0 (Figure 14) whichalso extend into a disk 2|| having arcuate notches 2 I2 in the peripherythereof. Attention is called to the fact that there are twice as manynotches 2 l2 in the periphery of the disk 2| as there are teeth in eachofthe ratchet wheels |23 andv |24 and it is thus seen that with eachupward stroke of the pawl arms |2| and |22, the ratchet wheels |23 and|24 will cause the associated disk 2|| to rotate in one direction or theother, a distance equal to the center to center distance between two ofthe notches 2|2 in the periphery of the disk 2| I.

The notches 2 I2 in the disk 2| are adapted to engaged by a roller 2|5rotatably mounted on a shoulder bolt 2|6 (Figures 3, '1, 8 and 15) whichhas its other end xedly mounted in a lever arm 2|1 pivotally secured, asat 220, to the vertically disposed plate 8|. The lever arm 2|1 extendsto the right beyond the roller 2|5 in Figures 3, '1 and 8, and has theupper end of a tension spring 22| connected to the same, the lower endof which is connected to a suitable spring perch 22:3 secured to thevertically disposed plate 8|, to thus urge the roller 2|5 intoengagement with the notches 2 l2 in the periphery of the disk 2| Thepurpose of the 'roller 2|5 engaging the notches 2|2 in the disk 2|| isto assist 1n accurately positioning the cylinder and the associatedpattern member. to be later described, and to also prevent unintentionalrotation of the parts with which the disk 2| I is associated.

It may be observed in Figure 14 that the ratchet wheels |23 and |24 andthe disk 2|| are rotatably mounted on a sleeve 238 having an arm 23|integral therewith (Figures 14 and 15). The disk 2l| has spacedprojections or ears 232 integral therewith which are threadablypenetrated by adjustment screws 233, the proximate ends of which areadapted to alternately engage the arm 23| integral with the sleeve 230.The purpose of this arm 23| will be later described. The outer end ofthe sleeve 238 has a screw 234 threadably imbedded therein, on which awasher 235 is mounted, and this Washer 235 slidably engages the outersurface of the ratchet wheel |23 to thus confine the ratchet wheels |23and |24 and the disk 2| on the sleeve 230 against the arm 23|, however,it is obvious that the disk 2|| may have sliding movement against thearm. 23|.

The sleeve 230 is fixedly mounted on the rear end of a shaft 240, as bya set screw 24| (Figurej 14). The shaft 240 is rotatably mounted inbearing blocks 242 secured as by screws 243, to the front and rearvertical plates 88 and 8|. The shaft 248 has a cylinder 245 fixedlymounted thereon, having a plurality of equally and radially disposedspaced pins 246 projecting therefrom and being disposed adjacentopposite edges of the same.

It may be observed in Figure 4 that the front end of the shaft 240 has apinion 241 xedly mounted thereon which engages a pinion 250. The pinion"250 is rotatably mounted on a shouldered stubv shaft 25| secured byscrews 252 to the vertically disposed front plate 80, and this pinion250 is prevented from having endwise movement on the shaft 25| by asuitable collar 253 xedly mounted thereon, as by a set screw 254. Thispinion 250 also engages a pinion 251 which is identical to the pinion241 and is fixedly mounted on one end of a shaft 260 rotatably mountedin bearing blocks 26|, secured as by screws 262, to the verticallydisposed plates 80 vertically disposed plates 810 and 8| is a secondcylinder 265 having a plurality of pins 266 projectingV outwardlytherefrom and being equally spaced around the periphery and adjacenteachl end of the same. Disposed below the cylinders 245 and 265 is afeed roll 261 and a take-up rol! 216, respectively. These rolls 261 and218 are, in this instance, shown to be of wood material and are iixedlymounted on shafts 21| and 21|' (Figures 19 and 20) however it isunderstood that wood material 'is not mandatory for these rolls.

The shafts 21| and 21| are mounted in identically the samemanner and,consequently, only the shaft 21| on which the roll 261 is mounted 'willbe described,` and likeV parts associated with 213 "has a compressionspring 215 mounted therein which engages and surrounds, a, restrictedportion 216 of the plunger 212, and engages the main portion of theplunger 212. The bore 268 is restricted, as at 269, and the other end ofthe spring 215 engages the shoulder formed by the restricted portion 269of the bore 268 to thus urge the plunger 212 from left to right inFigure 14 and to urge the plunger into engagement with the left-hand endof the shaft 21|. The restricted portion of the plunger 212 has aknurled nut 211 threadably mounted on the outer end thereof which may begrasped by an operator and pulled from right to left in Figure 14 tothus release the left-hand end of the shaft 21| for removing the feedroll 261 for ease in mounting thereon the pattern member, to be laterdescribed.

The other end-sof the shaft 21|, on which the feed roll 261 is fixedlymounted is fixedly penetrated by a transverse pin 280 projecting fromopposite sides thereof. An extension shaft 283 is provided having acavity 282 therein and being slotted, as at 28|, in one end thereof. Thepin 280 is adapted to fit in the slot 28| as the righthand end of theshaft 21| is inserted in the cavity 282 in the extension shaft 283.

The extension shaft 283 is rotatably mounted in a bearing block 285secured, as by bolts 286, to the vertical plate 8D. This extension shaft283 has a restricted portion 298 integral therewith on which a pinion295 (Figures 4 and 19) is mounted and is keyed thereto by a pin 286. Thepinion 295 is prevented from having endwise movement on the restrictedportion 2930i the extension shaft 283 by a collar 291 secured thereon asby a set screw 306 (Figure 19).

The pinion 295 is adapted to engage the pinio |15 in Figure 4. Referringto Figures 4 and 20, there may be observed the pinion 295' which isidentical to the pinion 295 and this pinion 295' is fixedly mounted onthe restricted portion 293 of the extension shaft 283' Which isidentical to the shaft 283 heretofore described, and this pinion 295meshes with the pinion |95.

The feed roll 261 has one end of a suitable paper or fabric patternmember indicated at P secured thereto, as by an adhesive or by staplesor the like, and the required length of the pattern member P is woundabout the feed roll 261 and then extends upwardly in Figure 6 over thecylinders 245 and 265, successively, and this pattern member P has aplurality of spaced perforations 318 adjacent opposite edges thereofwhich coincide with and are adapted to be engaged by the pins 248 and286 in the cylinders 245 and 265, respectively.

The pattern member P then extends downwardly from the cylinder 265 and aminor portion of the pattern member P is wound about the roll 218 andits other end is secured to the roll 216, by any suitable means such asan adhesive or staples or the like.

Attention is called to the fact that although the roll 261 is referredto as a feed roll and the roll 218 is referred to as a take-up roll, itis obvious that when the pattern member P has been wound from the roll261 to the roll 210, and the reversing mechanism has caused the patternmember P to change its direction, in the manner to be later described,the take-up roll 210 would then serve as a feed roll and the presentfeed roll 261 would serve as a take-up roll.

Referring to Figure 13, it may be observed that the perforations 3|0adjacent opposite sides of the pattern member Pare in alignment witheach other transversely of the pattern member P and there are pairs oftransverse parallel rows of perforations 3|2 in alignment with each ofthe perforations 3|6 on a transverse plane relative to the patternmember P. It will be noted that there are imperforate areas 3|3 betweenthe perforations 3|2 according to the desired pattern to be woven in thefabric.

The pattern reading unit broadly designated at 320 is shown in Figures2, 3, 6 and 9. This pattern reading unit 328 comprises a lowertransverse bar 32| secured, as by screws 322, to the proximate surfacesof the vertically disposed plates 80 and 8| and having a double row ofbores 323 therein. The double row of bores 32-3 in the lower bar 32|coincide with each of the double rows of perforations in the patternmember P as the pattern member P is moved in step by step relationthrough the pattern reading unit 320, and the upper surface of the bar32| supports the pattern member P as it is moved through the patternreading unit 328 between the cylinders 245 and 265 (Figure 6).

Whenever perforations 3|2 in the pattern member P are in alignment withcorresponding bores 323 in the bar 32|,A corresponding reading pins areadapted to penetrate the corresponding perforations 3| 2 in the patternmember P and to loosely penetrate the corresponding bore 323 in the bar32|. There are two rows of these pattern reading pins, the pins in onerow being indicated at 325 and the pins in the other row being indicatedat 326'.

The pins 325 and 326 are mounted for vertical sliding movementin thetransverse guide bars 321 and 328 (Figure 9) vand these pins 325 and 326have enlarged portions 330, which slidably penetrate another transverseguide bar 33|.A The transverse bars 321, 328 and 33|Y are in parallelspaced relation to each other and are mounted for vertical slidingmovement 4'at each end thereofV on guide members 332 secured, as bywelding, to the proximate surfaces of the vertically disposed platemembers 80 and 8| (Figures 2 and 6).

It may be observed in Figures 6 and 9 that the plate 321, being f arelatively vlight material is adapted to rest on the upper surface ofthe pattern member P as it passes over the transverse bar 32|, to thusserve as a guide member for the pins 325k and 326 and due to the closepromixity of the pattern member P tothe plate 321 the plate 321 insuresthat the pins 325 and 326 will always be properly positioned 4forentering the perforations 3 l 2 in the pattern member P. When animperforate area 3|3 passes beneath the pins 325 and 326, it is obviousthat thepins 325 and 326 would merely ride on the upper surface of thepattern member'P.

The uppermost transverse bar 33| is slidably penetrated adjacent eachend thereof by a screw 334 and is threadably imbedded in the trans,-verse bar 328 (Figure 9). It is thus seen .that the transverse bars 328and 33| will rise and lower, in a manner tovbe later described,simultaneously, and as the transverse bars 328 and 33|r are raised, andinasmuch as the enlarged portion 336 of the pins 325 and 326 formshoulders which rest on the bar 328, the pins 325 and 326 would also beraised whenever the bars 328 and 33|V are raised, by means to bepresently described.

The free ends of a pair of arms 336 are adapted to engage the lowersurface of the transverse bar 328, adjacent opposite endsV thereof(Figures 2 and 6) and these arms 336V extend inwardly towards theharness raising jacks 43* andare X- edly mounted, as by set screws 331,on a transverse shaft 340. The front and rear dobbyframe members 46 and4| havevopenings 34| adjacent their lower edges and the transverse shaft340 extends into these openings 34| and is oscillatably mounted inbearing blocks 342-secured, as vby screws 343, to the verticallydisposed plates 86 and 8| (Figures 4 and 7) The rearmost end of thisshaft 346, that is the end observed inv Figures 7 and 8,` has a dog 341xedly mounted having an ear 348v integral therewith. There is mountedadjacent thisL dog 341 a substantially vertically disposed lever arm 356pivotally secured as at 35|I t0 the vertically-disposed plate 8l'. Thelever arm 350 has a notch 352 therein which is adapted` to beintermittently engaged by the ear 348 ofthe dog 341. When the ear 348 isin engagement with the lever arm- 3.58, the plates 328 and 33|, of thepattern reading unit 326, are in a raised. position, not` shown,.so thatthe lower ends of the pins 325 and 326 are also moved upwardly out ofengagement with the pattern member P to thus permit a step inthemovement of the pattern member P between the bars 32| and 321. Afterastep has been made in the movement of the pattern member P, between theplates v32| and 321, the notched lever arm 350 is caused to move in aclockwise direction in Figures 3 and 8, out of engagement with the dog341, to the position shown in Figure 7, by means to be presentlydescribed'.

A forked member 353 is pivotally connected, as at 354 intermediate theends of the lever arm 350 (Figures 3, 7,8, 10 and 16). The forked member353 has a nut 3.55 welded thereto which is adapted to be threadablypenetrated by one end of a rod 356 which extends from left to right inFigure 7 and slidably penetrates a bracket .358 secured, as by a. screw360, to the rear vertical frame member 4IA of the dobby head36.

A compression spring 36|V surrounds the rod 356 and engages the bracket358 at one end thereof and the other end of the compressionspring 36|engages an adjustable sleeve' 362 secured on the shaft 356, kas by a setscrew 363. The sleeve 362 has a rib 364 integral therewith having a theleg |01 of the L-shaped member |I0.

It is thus seen that as the lower end of the rocker 64 moves from leftto right in Figures 3, 7 and 8, the free end of the arm 366 will bemoved from the positionshovvn in Figure 7 into engagement with the notch365 in the sleeve 362, as shown in Figures 3, 8 and 10, and would thencontinue to move from left to right in Figures 3, 7 and 8 to thus movethe sleeve and the rod 356 associated therewith from left to right inFigures 3, 7 and 8, and this will cause the lever arm 350 to be moved ina clockwise direction in Figures 3, '7 and 8 to thus release the ear 348of the dog 341 from engagement with the notch 352 in the upper end ofthe lever arm 35|).

This allows the transverse bars 328 and 33| of the pattern reading unit328 (Figure 6) to move downwardly, by gravity and to, in turn, move thearms 336 in a clockwise direction in Figure 6, at which time the partswould rest in the position shown in Figures 6 and 7 with the exceptionthat the reading fingers 325 and 32,6 may or may not be in the loweredposition shown in Figure 6 depending upon whether or not there is one ofthe perforations 3|2 in alignment with each of the reading pins 326 and325.

Pivotally connected to therupper end of the vertical leg |01 of theL-shaped member H0, as at 310, is a block 31| (Figures 3, 7 and 8) inone end of which one end of a connecting rod 312 is threadably imbeddedand has a lock nut 313 thereon to thus lock the end of the connectingrod 312 in the block 31|. The other end of the connecting rod 312 ispivotally connected, as at 315, to the upper end of an oscillatablelever arm 316 oscillatably mounted on a pin 311 projecting from abracket 380 secured, as by screws 38|, to the rear vertical frame member4| of the dobby head 30.

The free end of the oscillatable lever arm 316 has a cavity 383 thereinin which a dog 384 is pivotally mounted, as at 385 (Figures 3, '7, 8, 1land 12). Referring to Figure 12, it may be observed that the free end ofthe oscillatable lever arm 316 also has a notch 386 therein, in which acompression spring 381 is disposed, the opposite ends of which aremounted on pins 390 and 39| secured as by a pressed fit in theoscillatable lever arm' 316 and the dog 384, respectively. The pivoteddog 384 has an ear 392 integral therewith which is adapted to engage thefree end of the arm 316 adjacent the cavity 383 as the pivoted dog 384is urged in a counterclockwise direction in Figure l2 by the compressionspring 381. The pivoted dog 384 also has a lower cam surface 393 and adiverging cam surface 394 and these surfaces 393 and 394 are adapted tointermittently engage the ear 348 of the dog 341, in a manner to belater described.

The enlarged portions 330 of the pattern reading Vfingers 325 aresubstantially longer than the portions 330 of the pattern readingfingers 326 in Figure 6. The pattern reading pins 325 and 326 controlthe position of the dobby hooks 5| and 52, respectively, through themedium of corresponding interconnected elements which will now bedescribed. The upper ends of the enlarged portions 330 of the fingers325 loosely touch the outer ends of alternately spaced oscillatablengers 4 00 and the upper ends of the enlarged portions 330 of thefingers 326 loosely touch the upper ends of alternately spacedoscillatable fingers 40|, which are disposed between the oscillatablefingers 400. The ngers 400 and 40| (Figure 6) are oscillatably mountedon the transverse shaft 340 intermediate their ends, and the oppositeends of the same have tension springs 402 connected to the same whichextend upwardly and are connected to the ends of bell cranks 404 and403, respectively. The bell cranks 403 and 404 are oscillatably mountedon a transverse shaft 405 secured at each end thereof to the front andrear vertical frame members 40 and 4|, respectively, of the dobby head30.

The bell cranks 403 and 404 have respective arms 401 and 408, the arm408 being substantially longerthan the arm 401 and being disposed at asomewhat different angle than the arm 401. The upper free ends of thearms 408 of the bell cranks 404 have sliding movement in theconventional comb member 56 which thereby serves as a guide member forthe upper ends of the arms 408 and the arms 408 engage the lowersurfaces of the conventional hooks 52.

Disposed below the conventional comb member 56'is a comb member 4|0, oneend of which is secured to the rear vertical frame member 4| of thedobby head 30 by the same screw 360 that secures the bracket 358 to thesame (Figure 7) the other end of the comb member being secured, as by ascrew 4| to the lower surface 12 of the front vertically disposed framemember 40 ofthe dobby head 30 (Figure 4).

The arms 401 of the bell cranks 403 extend into the comb 4 0 and havevertical sliding movement in the same and are guided by the same and theupper portion of this comb 4|0 is slidably penetrated by a plurality ofvertically disposed rods 4|5, there being one of these verticallydisposed rods 4|5 to accommodate each of the arms 401 of the bell cranks403. These rods 4|5 extend upwardly and also have vertical slidingmovement in a transverse bar 4 I 6 which is a part of the conventionalcomb 56 heretofore described.

These rods 4|5 extend upwardly beyond the bar 4|6 andthe upper ends ofthe same engage the lower surfaces of the hooks 5| connected to the jacklevers 45.

Method of operation In the operation of this apparatus, a suitablepattern member P has one end thereof secured to the feed roll 261 and itis then wound about the same, leaving a substantial length of thepattern member P free so that it may be extended over the cylinders 245and 265 and through the pattern reading unit 320 disposed therebetweenand so the other end of the same may be extended downwardly and securedto the takeup roll 210. It has already been described how the patternmember P must be placed on the rollers 245 and 265 in such a manner thatthe pins 246 and 266 project through the perforations 3 0 adjacentopposite sides of the pattern member P. This is so the pattern will becaused to move when the cylinders 245 and 265 are caused to rotate.

During the time that the pattern member P is being mounted on thecylinders 245 and 265, in the manner heretofore described, thetransverse bars 328 and 33| may be raised manually to thus move thelower ends of the pattern reading pins 325 and 326 upwardly out of thepath of the pattern member P.

The loom is then started in a conventional manner and the pick shaft 12transmits rotation to the dobby crank 61 thereby causing the rockers 64and 63 to oscillate. With each revolution of the pick shaft 12 two pickswill have been woven in the operation of the loom and it is thus seenthat when the dobby connecting rod 61 is moved downwardly, the uppermosthook 5| will move from left to right in Figures 1, 4 and 6 to thus movethe associated harness jacks 43 inwardly of dobby head 30 and to raisethe harnesses I4 connected to the same by the harness straps |1, and asthe dobby crank 1| passes through the upper part of its stroke, thusmoving the dobby connecting rod 61 upwardly, the knife 60 will move fromright to left in Figures 1 and 6 and the lower knife 6| will move fromleft to right to move any of the hooks 52, which may be in position tobe engaged by the same, from left to right to thus actuate thecorresponding harness jacks 43 and to thus raise the correspondingharnesses connected thereto by the straps |1. This is a typicaloperation of a double indexing dobby head.

Now, assuming that the parts are in the position shown in Figure 3, whenthe loom is started, the knife 6| will move towards the loom or from theposition shown in Figure 3 to the right-hand end of the slot 11 in theframe member 4| of the dobby head 30 and the uppermost knife 60 movesoutwardly or away from the loom, in the opposite direction. iNow, as theknife 6| moves toward the loom, any of the hooks 52 which may A13 beV inengagement with'thersame are temporarily released' from Vthe 'bottomknife 6 I: and those? in engagement with" the, upper knife 60 are movedfrom left to right' to thus move 'the 'harness` j acks 43 inwardly andto thereby raise the corresponding harnesses I4.

Now, asv theseA knives-611 and 6| alternately move toward the left handend of the associated slots 16 and 11`in`Figure 6, the nhooks 5| and-52are released and certain of thesehooks may be raised upwardly.A out ofengagement with the knives ttl` and 6| by the'pattern meansfin themanner Vtovk be presentlyV described. It is obvious that any of theseYhooks or 52 that arel raised upwardly wouldnot bev engagedgby the.Vknives 60 or 6| as they move` outwardly away-"from'th'e left-hand'endsYof therslots-161-and111; respectively, andthe corresponding harnessesII4" wouldremain in their lowermost' position.

Now, as the lower endl' of* the rocker 64,` in Figure 3, moves fromleft" to right, the vertical leg ||l1 of thelL-shaped'member H alsomoves from left to right, at' its upper end, to thus' cause the leverarm 316'tolpartiallyrotate in a clockwise direction. Simultaneously-vthe arm 366'fenga'ges the rnotch B65-inthe sleeve 362' (FigurestS, Sandto lthus move the substantially vertically disposed lever arm350-outofengagementwithrthe ear 348" of the dog 341 to thereby releasevthev sameY and to permit the'transversebars 328 and- 33 of the patternreading unit'32-0 Yto move'Y downwardly, by gravity, as heretoforedescribed;

However, immediatelybefore the ear 348 fof the dog' 341 is'release'd,vin the; manner heretofore described; the pawlfarm' |22 will havemoveolup'- wardly beyond engagement withthe 'corresponding ratchet wheel|24 and willfhave` thus transmittedfonestepin the rotationof thecylinders 245 and `-265 in a counterclockwise direction in Figure 6, andthe pattern member P willthus remain stationary duringl the time thedog3-4-1-is out of engagement-with the notch 3-52V inthe lever arm350.`Simultaneously, the pattern-reading -pins 325iand 326 'perform theirselectivezoperation onthe-hooks 5|- and 52A in accordance with theYperforations 3 |2- in the pattern' member' P in the manner tobe laterdescribed.-

When the dog 341 is released, the -shaft 340,` on which the dog 341 ismounted, will be caused to rotate slightly ina counterclockwise:direction, in Figure '7, andtheY dog- 341 will thus engage thatv portionof the lever arm 35|]V disposed above-the notch-352 and the lever armwill be urged against the ear 348 of the vdog 341 bythe compressionspring 36| around the rod 356 (Figure '7).

Now, as the knife 6| moves from right-to;- left in Figures 3, '7 and 8,the L-shapedmember H0 is caused to move about its pivot pointl in acounterclockwise direction which will alsol` move the lever arm 316 inacounterclockwise direction from the position-shown in Figure 8 tothatshown in Figure '7. Assuming that the ear 348 of the dog 341 is outofengagement with the notch 352 in the lever arm-350, the surface 394voff the pivote'd dog-384 will engage thevear 348'of the'dog 341V androcker tllthenmovesvfrom left toright at its' lower endVand the verticalleg |01 ofi the L- shaped`V member' 0f isilmoved vvfrom left to'. rightat'itsupper' end to vthus move'the. lever-"arm 316 in'. a` clockwisedirectioniniFigure' '7. Now, as this-arm moves ina clockwise direction,the'surfacer393of'the'pivoted dog 384 engages the top surface of the ear348 of the dog 341 to` move the-same* downwardly until it haspassedbeyoridl thel'limitsf'o'f" th-eear 348` which is due to thedifferentdistances-I from the,` pivot` points to the ends of the` leverarrn316. and the ear 348.v and to-fthereby release -the dog 341atiwhich'time it A will lagain move upwardly slightly and' the upper endlof the lever arm 350 Iwill have been urged fromright to' leftindi-ligure* '7 by the compression! spring 361 and the earv348lwill-'again' ehgage the notch 3529'in the' lever` armv 350.

As this dog -341 4is) caused to' move downwardly' at? -its-.right-h'andendl, orin a clockwise direction iri11ig1u`re-"7,4 itfis obvious -thatthe patternreading unit-320wil1again belraised; infthevmannerkheretofore described) -bythe.V arms 336 thus .moving the pins 325 aridi32E-out ofthe pathrof the pattern-lmemberfP.

Tliemovementof the free endloftlie leverarm 316being-muchfaster-tharifthe' movement/of the horizontalleg '|.I2foftheL--shaped member IIU, the leverl arr'n'l 316- will have raisedL thereading pins 325 and 326i justin time forv the ratchet wheel-f,` I 24?to .be eng-agedbyl the pawl arm |'2 2J to thusfnioveithe shaft" 240'! in1 a clockwise direction in Y Fig-ure? '7 the equivalent-of! theycenter'V to center dista-nce between two `of the arcuate notches 2| 2fin the-'disk 2||, or infotherwords, the disk 21| willcome to rest asevery other notch 212' in l'the' diskf'27`l Iris engaged bythe roller2|5. This will cause" the cylinder 245,' inFi'gure- 6; to rotate iriav`counterclockwise direction and to advance'the'pattern member P'pa'st'the lower end' of the reading pins 325andvv 326" the equivalent of two'double'- rowsf o'fperforations 3 2, thus passing*` byevery otherl doublerow of'- perforations 312 vso that7 tlie'semay'beengaged, ina manner tokbe" later:v described,l upony the reverse movement of the-'pattern'member P through the pattern readingunitS'Z 0'.

Now, asth'epins 32'5 (Figure 6)` register with corresponding"perforations 3|2: in the pattern member P theri'ght-hand end of thelingers 403 move downwardly to thus. permitth'e bell crank433'tolpartiallyro'tate in' a counterclockwise direction and' to'thereby perrrlit` the vertically dispose'dfrods` associatedtherewith tomove downwardly and'. to thiis'lowerv thefree ends of the corresponding'ho-oksl` 5|' to' where they may be engaged by' theknife 6'0"'upon itsoutward stroke. A Thepatte'rn reading pins`32-5, upon registering' withthe perforations 3I2A in the` pattern mem-ber P, vallow the free' endsof the pattern reading` iingersf4|l`|`l associated therewith to movedownwardly, thereby permitting the .correspondingbellcranks 404'topartially'rotate in a counterclockw'ise direction, inFigure 6, therebylowering the freeendof the associated hooks 52'to thereby lbe engagedVby the' knife 6| as it moves from left" t'o' right' in'Fi'gure 6'.

The: purpose of' the tension springs4`02 in Figurebetween the bellcranks 403" and 434 and thel reading fingers 'and '401, respectively, isto preventbreakage'of' the arms 4.01 and 468er any other interconnectedparts, when the dog 341 is moved downwardly in a clockwise'direction inFigure 7` which', ofl course; raisesthelower'ends. of the'vpins325l and326 upwardly" out of engagement with the pattern member P and thuscauses the reading fingers 400 and 40| to partially rotate in acounterclockwise direction in Figure 6 and thus these tension springs402 permit certain of the bell cranks 403 and 404 to remain stationaryas the left-hand end of the pattern reading fingers 400 and 40| movedownwardly in Figure 6.

Certain of the bell cranks 403 and 404 would be caused to remainstationary, under these circumstances, due to the fact that theassociated hooks or 52 may be in engagement with the knives 60 and 6|,in their course of travel, and thus could not be raised by the bellcranks 403 and 404.

Attention is called to the fact that the eccentric weight of the pawlarm |22 causes the pawl arm |22 to engage the ratchet wheel |24, inFigure 8, and the pawl arm |2| is prevented from engaging the ratchetwheel |23 by the lpin |29 on the arm |3|. Now, as the pattern member Pfeeds from the roll 261 to the roll 210 in Figure 6, this causes thepinion y295 to rotate in a counterclockwise direction in Figure 4 tothus rotate the pinion in a clockwise direction and this will cause thecable |10 to wind around the hub of the pinion |15. Simultaneously, thetakeup roll 210 would be rotating in a counterclockwise direction inFigures 4 and 6 to thus cause the pinion 295 to rotate in acounterclockwise direction and permit rotation of the pinion |95 in aclockwise direction to thereby permit the cable |10 to be unwound fromthe same. The pulley |85 and its associated weight also induce rotationof the pinion 295 as the cable is unwound from the pinion |95 and iswound on the pinion |15. As this takes place, the collar |82 on theright-hand reach of the cable |10 moves upwardly and engages the ear |65of the strap iron member |64 to thus cause the same to partially rotatein a counterclockwise direction in Figure 4. This would cause the arm|56 to move downwardly at its left-hand end in Figure 4 and would causethe shaft |4| to move in a clockwise direction in Figure 4 and in acounterclockwise direction in Figures 3, 'I and 8. Conversely, thecollar |92 functions in the same manner as the collar |82 to againreverse the direction of movement of the pattern member P opposite tothat which is to be presently described.

Now, as this shaft |4| partially rotates in a counterclockwise directionin Figures 3, 7 and 8, the arm |3| rwould move from right to left inFigure '7 or from the position shown in Figure 8 to the position shownin Figure '1 and the pin |30 would then engage the finger D26 of thepawl arm |22 to move the same to a position where it would not engagethe ratchet wheel |24. However, this would also permit the pawl arm |25to move, by gravity, into a position where it would engage the ratchetwheel |23 on its upward stroke, which `would be transmitted to the samein th-same manner as the upward stroke is transmitted to the pawl arm|22, as heretofore described.

It is thus seen that the pawl arm |2| would then engage the ratchetwheel |23 in such a manner as to `cause the shaft 240 to rotate in acounterclockwise direction as observed in Figures 3, '1 and 8 and tothus transmit rotation to the cylinder 245 in a clockwise direction asobserved in Figure 6, to thereby reverse the direction of movement ofthe pattern member P through the pattern reading unit 320.

It has been previously stated that this shaft 240 rotated in acounterlockwise direction in Figure 6 as the pattern member P was fedfrom thel roll 261 to the roll 210, and during this time the portion 23|of the sleeve 230 in Figures 14 and 15 will have been in the right-handdotted line position indicated in Figure l5.

However, when the shaft 240 is caused to reverse its direction ashereinbefore described, the ratchet wheels |23 and |24 and the disk 2||will partially rotate a distance equivalent to the distance from one ofthe arcuate notches 2 I2 in the disk 2|| to the center of the nextsucceeding arcuate notch 2|2, before causing the shaft 240 to turn andat which time the arm 23| of the sleeve 230 would move from theright-hand dotted line position to the left-hand dotted line positionshown in Figure 15. Motion would then be transmitted to the shaft 240,in a counterclockwise direction in Figure 6, rst a half step, then itwould resume a iull step with each upward stroke of the pawl |2 and itis thus seen that the double rows of periorations 3|2 that lwere notengaged by the lower end of the pattern reading iingers 325 and 326 asthe pattern member P advanced from 'right to left in Figure 6, now arecaused to register with the pattern reading fingers 325 and 326, uponreverse movement of the pattern member P, while the double rows ofperforations 3|2 that registered with the pins 325 and 326 as it movedfrom right to left in Figure 6 are caused to pass through the patternreading unit 320 without stopping to register with the pins 325 and 326.

This is necessary due to the fact that the pins 325 and 326 would nottransmit the pattern to the harnesses correctly if the same holes wereto be penetrated by the pins 325 and 32E upon its reverse movementthrough the pattern unit 320.

It is thus seen that I have provided an improved means for mounting aperforated pattern member for cooperating with a conventional dobby headwhereby the length of the pattern member P may be greatly decreased andwhereby I have eliminated the necessity of providing containers or boxesor the like on the floor of a weave shop adjacent the dobby head of aloom for storing a major part of the pattern member P therein while thepattern member P is being fed through a pattern reading mechanism.

In the drawings and specication there has been set forth a preferredembodiment of the invention, and although specific terms are em` ployed,they are used in a generic and descriptive sense only, and not forpurposes of limitation, the scope of the invention being defined in theclaims.

I claim:

1. In a dobby loom having harness jacks and hooks and knives, said hooksbeing adapted to intermittently engage said knives for operating theharness jacks, a pattern member for controlling the position of saidhooks relative to the knives, said pattern member having a plurality oftransverse rows of perforations therein, a pair of cylinders over whichsaid pattern member is adapted to pass, shouldered pattern reading pinsadapted to engage said pattern member between said cylinders, means foradvancing said pattern member past the pattern reading pins in step bystep relation, means for intermittently raising and lowering saidshouldered pattern reading pins comprising a transverse member in whichsaid pattern reading pins are mounted for vertical sliding movement, anoscillatable shaft mounted in parallel relation to said transversemember, an arm extending from said oscillatable shaft to beneath thetransverse member, a dog secured to one end of said oscillatable shaft,a lever arm disposed adjacent one end of said dog, and having a notchtherein which is adapted to be intermittently engaged by said dog forcausing the free end of said arm engaging the lower surface of saidtransverse member to remain in a raised position to thereby hold thepattern reading pins out of engagement with the pattern member, meansfor moving said notched lever arm out of engagement with the dog tothereby permit the transverse member to move downwardly, by gravity, andto thus raise the free end of said dog and to lower the pins intoengagement with the pattern member.

2. In a structure according to claim 1, the means for moving the notchedlever arm comprising an oscillatable lever arm disposed adjacent saiddog, said oscillatable arm having a pivoted dog at one end thereof, saidpivoted dog having an ear integral therewith and spring means for urgingsaid ear into engagement with the end of the oscillatable lever arm,said firstnamed dog being adapted to be engaged by the pivoted dog asthe adjacent end of said oscillatable lever arm moves in one directionand the pivoted dog being prevented from pivoting by its ear engagingthe oscillatable lever arm to thus move the free end of the first-nameddog downwardly and into engagement with the notched lever arm therebycausing the arm connected to the oscillatable shaft to raise thetransverse member in which the pattern pins are mounted and whereby uponmovement of the adjacent end of said lever arm in the oppositedirection, the pivoted dog will be moved into engagement with the freeend of the first-named dog but will be permitted to pass by the same dueto the spring means associated therewith.

3. In a dobby loom having harnesses and a dobby head thereon and saiddobby head having an elongated perforated pattern member and jacks andmeans responsive to the perforations in the elongated pattern membermoving past a predetermined point for moving said jacks to control theraising and lowering of the harnesses, means for mounting and drivingsaid pattern member comprising a pair of spaced rotatable shaftsdisposed on the same horizontal plane, said shafts having cylindersi'lxedly mounted thereon, said pattern member being adapted to passbetween the cylinders in one direction, means for driving one of thecylinders comprising a sleeve xedly mounted on one end of the associatedshaft of said cylinder, a pair of juxtaposed and interconnected ratchetwheels loosely mounted on said sleeve, a disk having spaced arcuatenotches in its periphery and being disposed in juxtaposed relation toand also being connected to the ratchet wheels, said disk having a pairof spaced ears on the opposite side thereof from the ratchet wheels,said sleeve having an arm integral therewith and extending upwardlybetween the ears of said disk, a spring pressed roller adapted to engagethe arcuate notches in the periphery of the disk, a pair of oscillatablymounted pawl arms disposed adjacent the ratchet wheels. means fortransmitting oscillatory movement to the pawl arms, automatic means forholding one of said pawl arms out of engagement with one of the ratchetwheels while the other of the pawl arms is held in engagement with theother of the ratchet wheels, and automatic means for disenaging thesecond pawl arm from the second ratchet wheel and moving the flrst pawlarm into engagement with the first ratchet wheel simultaneously totransmit reverse rotation to the cylinder on which the pattern member ismounted, said ratchet wheels being adapted to advance the disk and theassociated cylinder in one direction so the disk stops as every otherarcuate notch is engaged by the spring pressed roller, and whereby whenthe other of the pawl arms is brought into engagement with thecorresponding ratchet wheel, the disk will be caused to move in theopposite direction a distance equal to the center to center distancefrom one of the arcuate notches to the next before again transmittingstep by step movement to the associated cylinder, the length of eachstep then being the same as they were upon the movement of the cylinderbeing in its original direction.

4. In a dobby loom having harness frames and a dobby frame and knivesand dobby hooks for raising and lowering the harness frames and alsohaving a driven rocker arm for imparting movement to the knives and alsohaving an elongated pattern member provided with spaced transverse rowsof perforations for controlling the raising and lowering of the harnessframes and also having pattern reading pins for each row ofperforations, means for withdrawing said reading pins from the path ofthe pattern and means for simultaneously advancing the pattern in stepby step relation so the pattern is advanced the distance of two doubletransverse rows of the perforations so the pattern pins will engageevery other double row of perforations as the'pattern is advanced in onedirection, means responsive to movement of certain perforations in saidpattern member into register with certain of said pattern reading pinsto cause certain of the dobby hooks to be in engagement with the dobbyknives while the remaining dobby hooks will be held out of engagementwith the dobby knives to thereby control the pattern woven by the loomby causing certain of the harness frames to be raised while other of theharness frames remain in a lowered position, said means for advancingthe pattern member comprising at least one roll rotatably mounted in thedobby frame, a rotatable shaft on which the roll is fixed, at least oneratchet wheel fixed on said shaft, a vertically movable member adjacentsaid ratchet wheel, a pawl carried by the vertically movable member andadapted to engage the' ratchet wheel, an L-shaped member oscillatablymounted on the dobby frame and connected to one end of the movablemember at one end thereof, and a connecting rod connected at one end tothe rocker arm and at its other end to the free end of the L-shapedmember for oscillating the L-shaped member to, in turn, transmitvertical reciprocatory motion to the movable member for driving theratchet wheel and the roll.

JAMES L. REYNOLDS, SR.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 691,608 Davenport Jan. 21, 1902720,869 Wyman Feb. 17, 1903 976,909 Pearsall Nov. 29, 1910 1,892,323Staubli Dec. 27, 1932

